Header not being returned when set in WithCallback

[GrantGHub]

Upgraded from 1.2.14 to 1.4.9. Was setting the header in WithCallback. This was correctly coming through. Now no headers are returned.

Taking the example tests and adjusting it (removing .WithHeader(header, "Stef");), should return the header set within WithCallback:

        public async Task Response_WithCallback_And_WithStatusCode_And_WithHeader()
        {
            // Assign
            var header = "X-UserId";
            var requestMessage = new RequestMessage(new UrlDetails("http://localhost/foo"), "GET", "::1");
            var responseBuilder = Response.Create()
                .WithCallback(request => new ResponseMessage
                {
                    BodyData = new BodyData
                    {
                        DetectedBodyType = BodyType.String,
                        BodyAsString = request.Path + "Bar"
                    },
                    StatusCode = HttpStatusCode.Accepted,
                    Headers = new Dictionary<string, WireMockList<string>>
                    {
                        { header, new WireMockList<string>("NA") }
                    }
                });

            // Act
            var response = await responseBuilder.ProvideResponseAsync(requestMessage, _settings);

            // Assert
            response.Message.BodyData.BodyAsString.Should().Be("/fooBar");
            response.Message.StatusCode.Should().Be(HttpStatusCode.Accepted);
            response.Message.Headers[header].Should().ContainSingle("NA");
        }

Headers are coming back empty.

response.Message.Headers.Count == 0
true

[StefH]

@GrantGHub Thanks for finding this.

[StefH]

#603

New version will be released shorty.

[GrantGHub]

Thank you for such a fast turn around. I have retrieved the latest and confirm the issue has been resolved.

Thanks again for the responsiveness to this request. Appreciate it.